﻿#region Copyright Statement
//  ------------------------------------------------------------------------------
//  
//    This file is part of The Streambolics Library.
//    Copyright © 2005-2009, Stephan Leclercq & Streambolics
//    All rights reserved.
//  
//    The Streambolics Library is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//  
//    The Streambolics Library is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//  
//    You should have received a copy of the GNU General Public License
//    along with Streambolics; if not, write to the Free Software
//    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
//  
//  ------------------------------------------------------------------------------
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Streambolics.Hp41s
{
    /// <summary>
    ///     The base class for values that can be stored in reigsters and on
    ///     the stack.
    /// </summary>

    public abstract class Value : Data
    {
        public Value (string aName)
            : base (aName)
        {
        }

        /// <summary>
        ///     The numerical representation of the data. Raises an
        ///     exception (usually "ALPHA DATA") when not numerical.
        /// </summary>

        public abstract double Numerical
        {
            get;
        }


        public int Integer
        {
            get
            {
                return (int)(Numerical);
            }
        }

        public void ToIndices (out int Current, out int Target, out int Step)
        {
            const double Epsilon = 0.0000000000001;
            double n = Numerical;
            Current = (int)n;
            n = (n-Current) * 1000 + Epsilon;
            Target = (int)n;
            n = (n-Target) * 100 + Epsilon;
            Step = (int) n;
            if (Step == 0)
            {
                Step = 1;
            }
        }

        public virtual string ToString (Flags aFlags)
        {
            return ToString ();
        }
    }
}
